I am makeing one too. but its not built for awesomeness or firepower...
its mostly just to make people understand the whole thing about after the world ends there probaly won't be enuff metal around to build stuff like the captains juggernaught thing

I was going to say that it all gets used up in the giganturan war perscribed by exodus and becomes unusable due to it super-heating till it all just turns to gas and blocks out the sun. causing another ice age... but that works to